[Resolved] The My Calendar database needs to be updated

After upgrading from 2.2.13 to 2.3.2 I get following message:
The My Calendar database needs to be updated. If “üpdate now” is pressed, then it say “My Calendar Database is updated” but the firts message return every time again. Do I have to set permissions for database handling or other permisssions?

Hi Joe,
Due to privacy issues I am not able to give access to the website.
I will try to solve this by myself. I found in the meantime an issue with the alter command. “WordPress database error ALTER command denied to user”
Thnaks for your support.